BackDoorLock hack - prevents silent updates - Page 20

eschwartz · 07-07-2016, 02:09 PM

I also saw a reference to /mnt/us/system/release_notes and /etc/releasenotes_url.txt in the PW2 5.7.2 firmware, by dumping `strings usr/bin/otav3`.
As well as threats to abort the update download -- those release notes might be needed to find the availability of updates.

Possibly some more things that can be modified or locked to interfere with the OTA sensing capabilities?

geekmaster · 07-07-2016, 02:13 PM

Quote:

Originally Posted by encol

do you mean this?

Yes, thanks. Karma coming your way too...

EDIT: Hmm... I tried to give you a nice number pattern, but it is much higher now. Somebody else must have given you a big karma bump just to mess with me (or I messed up myself). Oh well, you have a lot more karma than you did a moment before. Now you can give more too...

knc1 · 07-07-2016, 02:18 PM

Quote:

Originally Posted by eschwartz

I also saw a reference to /mnt/us/system/release_notes and /etc/releasenotes_url.txt in the PW2 5.7.2 firmware, by dumping `strings usr/bin/otav3`.
As well as threats to abort the update download -- those release notes might be needed to find the availability of updates.

Possibly some more things that can be modified or locked to interfere with the OTA sensing capabilities?

Perhaps also use the 'check for update' command, then warn user if something is ready to be sent their way.

geekmaster · 07-07-2016, 02:47 PM

Quote:

Originally Posted by knc1

Perhaps also use the 'check for update' command, then warn user if something is ready to be sent their way.

We can turn radio off (set airplane mode) automagically with lipc commands if we sense an impending update (perhaps a KUAL extension than launches a cron job or something).

knc1 · 07-07-2016, 03:06 PM

The update blocking becomes more important because of Step 7.

I tell people how to choose any firmware version available for their model.
If they load anything other than 'most recent' I am sure they will want it to stay that way.

dos007 · 03-22-2018, 02:25 PM

Is this still relevant on current firmwares?

The dir hack with update.bin.tmp.. does still work?

knc1 · 03-23-2018, 03:04 AM

1) No
2) Yes - although it must be spelled correctly
http://knetconnect.com/koa2/KOA2_Jai...agicparlabel-9

On the subject of "Hack" -
Please view the link at the right hand side of the first line of my signature.

dos007 · 03-31-2018, 05:45 AM

Thank you knc1

Ayala · 05-08-2022, 07:30 AM

Even if its jail broken it will be updated ? How could this affect the jailbreak then?

mergen3107 · 05-11-2022, 04:26 AM

JB will survive if you do the right things:
1) Switch off Wi-Fi
2) Reboot twice
3) Re-install JB Hotfix.

Main idea is to avoid any subsequent combination of upgrade and factory restore without JB hotfix re-install in between.

MiniBookWorm · 04-04-2025, 01:49 PM

I have a Kindle 3 (Wifi + 3G) model with the keyboard (B006), and I cannot prevent the OTA 1 update with 3G. Post installing the extension I did a reboot, locked the back door, confirmed it was locked via the text file, then turned on Wireless connection and once the 3G started up the screen would refresh post update and I would need to re-install MKK to get KUAL working again.

I've tried both methods (never at the same time).

1. Installing with update_backdoorlock_12_k3g_install.bin

2. Copying the directory backdoorlock in the extensions directory.

Once 3G starts up the silent update runs.

Has something changed with the way Amazon is doing the update? I'm trying to avoid resorting to SSH to edit the hosts file, or opening the unit to remove the 3G module/antenna as I don't know if the Wifi is also blocked with this extension.

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07-07-2016, 02:09 PM	#286
eschwartz Ex-Helpdesk Junkie Posts: 19,421 Karma: 85400180 Join Date: Nov 2012 Location: The Beaten Path, USA, Roundworld, This Side of Infinity Device: Kindle Touch fw5.3.7 (Wifi only)	I also saw a reference to /mnt/us/system/release_notes and /etc/releasenotes_url.txt in the PW2 5.7.2 firmware, by dumping `strings usr/bin/otav3`. As well as threats to abort the update download -- those release notes might be needed to find the availability of updates. Possibly some more things that can be modified or locked to interfere with the OTA sensing capabilities?

07-07-2016, 03:06 PM	#290
knc1 Going Viral Posts: 17,212 Karma: 18210809 Join Date: Feb 2012 Location: Central Texas Device: No K1, PW2, KV, KOA	The update blocking becomes more important because of Step 7. I tell people how to choose any firmware version available for their model. If they load anything other than 'most recent' I am sure they will want it to stay that way.

03-22-2018, 02:25 PM	#291
dos007 Junior Member Posts: 5 Karma: 10 Join Date: Mar 2018 Device: PW2	Is this still relevant on current firmwares? The dir hack with update.bin.tmp.. does still work?

03-23-2018, 03:04 AM	#292
knc1 Going Viral Posts: 17,212 Karma: 18210809 Join Date: Feb 2012 Location: Central Texas Device: No K1, PW2, KV, KOA	1) No 2) Yes - although it must be spelled correctly http://knetconnect.com/koa2/KOA2_Jai...agicparlabel-9 On the subject of "Hack" - Please view the link at the right hand side of the first line of my signature.

03-31-2018, 05:45 AM	#293
dos007 Junior Member Posts: 5 Karma: 10 Join Date: Mar 2018 Device: PW2	Thank you knc1

05-08-2022, 07:30 AM	#294
Ayala Member Posts: 12 Karma: 3160 Join Date: Jul 2019 Device: kpw 10th	Even if its jail broken it will be updated ? How could this affect the jailbreak then?

05-11-2022, 04:26 AM	#295
mergen3107 Wizard Posts: 1,555 Karma: 5000046 Join Date: Feb 2012 Location: Cape Canaveral Device: Kindle Scribe	JB will survive if you do the right things: 1) Switch off Wi-Fi 2) Reboot twice 3) Re-install JB Hotfix. Main idea is to avoid any subsequent combination of upgrade and factory restore without JB hotfix re-install in between.

04-04-2025, 01:49 PM	#296
MiniBookWorm Junior Member Posts: 8 Karma: 12 Join Date: Apr 2025 Device: Kindle 3 (Wifi+3G) B006	I have a Kindle 3 (Wifi + 3G) model with the keyboard (B006), and I cannot prevent the OTA 1 update with 3G. Post installing the extension I did a reboot, locked the back door, confirmed it was locked via the text file, then turned on Wireless connection and once the 3G started up the screen would refresh post update and I would need to re-install MKK to get KUAL working again. I've tried both methods (never at the same time). 1. Installing with update_backdoorlock_12_k3g_install.bin 2. Copying the directory backdoorlock in the extensions directory. Once 3G starts up the silent update runs. Has something changed with the way Amazon is doing the update? I'm trying to avoid resorting to SSH to edit the hosts file, or opening the unit to remove the 3G module/antenna as I don't know if the Wifi is also blocked with this extension.

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